CrystalDiskMark is a disk benchmark software that allows us to benchmark 4K and 4K queue depths with accuracy.

Key Features:-

* Sequential reads/writes

* Random 4KB/512KB reads/writes

* Text copy

* Change dialog design

* internationalization (i18n)

Note: Crystal Disk Mark 3.0 Technical Preview was used for these tests since it offers the ability to measure native command queuing at 4 and 32.

In CDM we are looking at 4K and NCQ performance. This is another area that can be tuned by changing the stripe size of your array and a few of the numerous settings on the controller. With our default settings we see the Areca ARC-1882i outperform the 9265-8i in every low queue depth (1 and 4), but with a queue depth of 32, the LSI controller is a little faster.

Things ran a bit differently in the write test, both controllers went back and forth depending on the type of RAID used.

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